The guy (or woman - this isn’t a gender-specific annoyance) who walks into a cafe on a cold day and leaves the door open. It only takes 2 seconds to close the door and save everyone from a chilling blast of arctic cold up their jacksey.
Yet this idiot, wearing his super-thick winter coat, doesn’t think about that, does he?
So, what happens next?
You get up from your chair and walk across to ‘ferme la porte’, ensuring that you slam it hard enough that the noise resonates around the room and shakes all the pictures off the walls. Everyone looks up at you, except for the ignorant ‘merde’ who left it ajar in the first place. You then trudge back to your seat (although in your mind you’re walking up to the man, grabbing his head and bashing it onto the counter infront of him).
You sit down, feeling irritated, and continue with what you were doing (the crossword in the newspaper, in which, coincidentally, the answer to 4 across is ‘tosspot’ - well, it’s not really, but it does fit, so f*ck it!)
Just as your mood begins to return to somewhere near normality, the inevitable happens. The guy has ordered take-away and, having paid for his sandwich and coffee by emptying the entire collection of loose change from his wallet, bag and coat pockets into a heap on to the counter, he opens the door and goes to walk out. You’re waiting for him to either shut the door behind him or give you the motive for murder.
Instead, he taunts you by doing neither and begins a long goodbye speech to the cafe owner (with the door wide open). Well, that’s enough for you - you get up off your chair, spilling the unfinished crossword to the floor, and sprint across the room, slamming the door in his face and knocking him and his coffee half way down the street. That’ll teach the little ‘4 across!’
Update: To my delight, I've just found out that there's a 'Close The Door' campaign in the UK. Find out more about it here.